BackgroundSinonasal symptoms are a common feature of primary ciliary dyskinesia (PCD), however, literature about their severity and frequency, particularly during the life course is scarce. Using baseline data from the Ear, nose, and throat (ENT) Prospective International Cohort of PCD patients, we describe sinonasal disease in PCD.MethodsWe included participants who had a routine sinonasal examination during which they completed a symptoms questionnaire. We compared frequency of reported symptoms, and examination findings among children and adults and identified characteristics potentially associated with higher risk of sinonasal disease using ordinal regression.Results12 centres contributed 384 participants; median age was 16 years (IQR 9–22), and 54% were male. Chronic nasal problems were the most common feature, reported by 341 (89%). More adults (33; 24%) than children (10; 4%) described hyposmia. Quality of life was moderately affected by rhinosinusitis among 136 participants with completed SNOT-22 questionnaires (median score 31; IQR 23–45). Examinations revealed nasal polyps among 51 of 345 participants (14%) and hypertrophic inferior nasal turbinates among 127 of 341 participants (34%). Facial pain was detected among 50 of 342 participants (13%). Nasal polyps, hypertrophic turbinates, deviated septum, and facial pain were found more commonly in adults than children. The only characteristic associated with higher risk of sinonasal disease was age 10 years and older.ConclusionsBased on our findings, regular sinonasal examinations are relevant for patients with PCD of all ages. There is a need for improved management of sinonasal disease supported by evidence-based guidelines.

Periodontal disease is that condition resulting in the destruction of periodontal tissues, bone resorption, and tooth loss, the etiology of which is linked to immunological and microbiological factors. The aim of this study was to evaluate the potential trigger of periodontal disease in a rat model using bacterial species incriminated in the pathology of human periodontitis and to establish their optimal concentrations capable of reproducing the disease, with the idea of subsequently developing innovative treatments for the condition. In this study, we included 15 male Wistar rats, aged 20 weeks, which we divided into three groups. In each group, we applied ligatures with gingival retraction wire on the maxillary incisors. The ligature and the gingival sac were contaminated by oral gavage with a mixture of fresh cultures of Aggregatibacter actinomycetemcomitans (A.a), Fusobacterium nucleatum (F.n) and Streptococcus oralis (S.o) in concentrations of 108, 109, and 1010 CFU/mL each for 5 days a week for 4 weeks. During the clinical monitoring period of 28 days, overlapped with the period of oral contamination, we followed the expression of clinical signs specific to periodontitis. We also monitored the evolution of body weight and took weekly samples from the oral cavity for the microbiological identification of the tested bacteria and blood samples for hematological examination. At the end of the study, the animals were euthanized, and the ligated incisors were taken for histopathological analysis. The characteristic symptomatology of periodontal disease was expressed from the first week of the study and was maintained until the end, and we were able to identify the bacteria during each examination. Hematologically, the number of neutrophils decreased dramatically (p < 0.0001) in the case of the 109 group, unlike the other groups, as did the number of lymphocytes. Histopathologically, we identified neutrophilic infiltrate in all groups, as well as the presence of coccobacilli, periodontal tissue hyperplasia, and periodontal lysis. In the 109 group, we also observed pulpal tissue with necrotic bone fragments and pyogranulomatous inflammatory reaction. By corroborating the data, we can conclude that for the development of periodontal disease using A.a, F.n, and S.o, a concentration of 109 or 1010 CFU/mL is required, which must necessarily contaminate a ligature thread applied to the level of the rat’s dental pack.

Background: Although most patients with primary ciliary dyskinesia (PCD) report sinonasal symptoms, little is known about symptom frequency and severity. We describe sinonasal manifestations among PCD patients using data from the Ear, nose, and throat (ENT) Prospective International Cohort of PCD patients. Methods: We included data from participants with routine clinical ENT examinations and complete FOLLOW-PCD symptoms questionnaires from the same visit or within 2 weeks. We compared the prevalence, reported symptoms, and clinical findings among children and adults and identified potential factors associated with increased risk of sinonasal disease using ordinal regression. Results: We included 397 (53% male) participants from 12 centres with median age 15 years (IQR 9–22). Almost all (352; 89%) reported chronic nasal symptoms. More adults (34; 26%) than children (11; 5%) reported anosmia or hyposmia. Among 140 participants who completed SNOT–22 questionnaires, quality of life was moderately affected by sinonasal symptoms (median score 31; IQR 22–45). We observed nasal polyps among 52 (15%) of 352 participants and hypertrophic inferior nasal turbinates among 129 (34%) of 353 participants; facial pain was recorded among 51 (13%) of 353 participants. More adults than children had nasal polyps, hypertrophic turbinates, deviated septum, and facial pain. We found age 10 and older the only factor associated with increased risk of sinonasal disease. Conclusions: Our study reinforces the importance of regular sinonasal evaluations for patients of all ages with PCD and the need for developing evidence-based guidelines for sinonasal treatments as part of overall PCD management.